Caption: Tasmanian wolf (Thylacinus cynocephalus), computer artwork. Also called the thylacine, this is a species of marsupial that is considered extinct. Unrelated to the dog or wolf, the thylacine was about the size of a small wolf, making it the largest marsupial carnivore in recent times. Fossils of the species have been found in New Guinea, Australia and Tasmania, but it declined due to the introduction of dogs by man and through trapping by farmers. The last confirmed sighting in the wild was in Tasmania in 1933, and the last captive animal died in 1936. None have been found since.